Yarn-tension device



Dec. 30, 1930. I MQKEAN 1,787,083

YARN TENSION DEVICE Fil ed April 9. 1929 INVENTOR ATTORNEYS PatentedDec. 30, 1930 JOHN 0.;MokEAN, or WESTF'IELD, massacnusntrrs, ASSIGNOR T0Fosrnn MACHINE PATE'NTaOFF-ICE COMPANY, OF WESTFIELD, MASSACHUSETTS, ACORPORATION OF MASSACHUSETTS yann-mnnsron nnvlon Applicationifiled April9, 1929. Serial no. 353,799;

The object of my invention is to provide certain improvements in theconstruction,

form and arrangement of the several parts of a device for tensioningyarn, whereby the threading of the yarn through the device may befacilitated.

My invention comprises a tension deviceof the gravity operated tensionwasher type, in which the supporting frame is provided With a ringportion spanned by a spider which forms a 6 support for the coactingtension washers and their'retaining pin. porting frame is a-lso providedwith an elongated closed: loop. offset from and partly surrounding the.ring portion, the outer and inner walls of which loop are shaped'tofacilitate the'th-readingof the yarn, between said tension washers,pairs of leading-in and leading-out recesses being formed at the ends ofthe loop forguiding the yarn as it enters thetension device from onedirection and leaves thetension device in another direc tion.

A practical embodiment of my invention is represented in theaccompanying drawings, in which Fig. 1. represents the tension device intop plan, the path of'the yarn through the device being indicated bydotted lines;

Fig. 2, represents the tension device in side elevation;

vFig. 3 represents a tension device a b Fig. 4 represents a verticalcentral section taken in the planeof the line IV+IV of Fig. 1, lookingin the direction of the arrows.

The supporting. frame of the tension device isshown as removablyattached to a vertical bar 1 by providing the frame with a lug 2 havingan open-sided recess 3 for receiving the'bar and" a clampscrewa forsecuring the frame to the bar. The frame is provided with a ring portion5 which is spannediby a spider support for the tension washers and theirretaining pin. The three arms 6, 7, 8 of the spider lead to a centrallyarranged'vertical hollow lug 9. The tension washerretaining pin 10uprisesfrom this lug 9 and it is herein shown as having a reduced shank11 forming a shoulder 12 resting on the top front elevation of the Thesup-.

of the lug, the lower end of the shank projectingbeyond the bottom ofthe lug and threaded to receive anut 13 for securing the pin to thelug9.

The under tension washer 14 has a depending inner annular flange 15surrounding the pin 10 and spaced therefrom, and a downwardly andoutwardly directed peripheral flange 16 which rests upon the arms 6, 7,8 of the spider, the upper surfaces of said arms being stepped to formseats for the said peripheral flange 16 of the under tension washer.

The upper tension washer 17 normally rests, by, gravity, upon'the lowertension washer 14;. 'This upper tension washer is shown as having anuprising inner annular flange 18 surrounding and loosely fitting thewasher retaining pin lO'and an upwardly and outwardly inclinedperipheral flange 19' coacting with the downwardly and outwardlyinclined flange 16 of the lower tension washer, to facilitate the entryof the yarn between the washers. v

The washer retaining pin'lO is preferably provided'with an annulargroove 20 located inthe plane of the meeting faces of the two tensionwashers for receiving the yarnasit passes around the pin.

The supporting frame of the tension device is also provided with anelongated closed loop 21, offset from the ring portion 5 and partiallysurroundingfit, the inner curved wall of the loop being the outer wallof the ring portion 5, and the outer curved wall of the loop beingdenoted by 22. The outer wall of the ring portion is provided with twouprising flanges 23, 2 1, forming guards for facilitating the threadingofthe yarn and for preventing the wrong threading of the yarn. Theseflanges provide between them a shallow top recess 25. The side portionsof the outer wall 22 of the loop 21 are located above the plane of thering portion and thread guiding recesses 26, 27 are thereby formedbetween them and the uprising flanges 23, 24. These side portions of theouter wall of the loop are curved down into the plane of the ringportion to form a shallow front top recess 28 and two shallow bottomrecesses 29, 30, the

last named bottom recesses 29, 30, coacting with the grooves 26, 27.respectively, to guide theyarn into and out of the tension device.

. In threading the yarn it is pulled upwardly through the closed loop 21and the openloopthus formed in the yarn is passed over the pin and inbetweenthe tension washers 14; and 17. As the winding of the yarnstarts, it will be drawn into the shallow recess of the washer retainingpin '10; the incoming portion of the yarn'will be drawn along thebottoms of the recesses 26, 29, and .the out,-

going portion of the yarn will be drawn along the bottoms of therecessesQ'Z-and 39. Y The top shallow recesses and 28 in the oppositewalls of the loop 21 permit the ready'grasping ofthe yarnto-pull itupwardlythrough the loop for threading the yarn. The-up.

.resorted to in the construction, form and arrangementof the severalparts without departing fromthe spiritand scope of my invention; hence,I do not wish to limit myself to the particular embodiment herein shownand described, but

WVhat I claim is 1. A yarn tension device comprisingtensioning means anda supporting framethere,

for provided with an oifset 5 closed loop through which. the yarn isdrawn upwardly in loop form in the threading of the yarn throughthetensioning means. 7

2. A yarn tensiondevice comprising coo-- acting tension washers and asupporting frame therefor provided with an offset closed loop throughwhich the yarn is drawn upwardly in loop form in thethreading of theyarn through the tension washers.

3. A yarn tension device comprising tensioning means and a supportingframe therefor provided with an. ofiset closed loop through whichtheyarn is drawn upwardly in loop form in the threading of the yarnthrough the tensioning means, said supporting frame having leadingdnland leadingout recesses for guiding the yarn into and out of thetensioning means.

4. A yarn tension device comprisingcoacting tension washers and asupporting frame therefor provided with anoffset closed loop throughwhich the yarn is drawn upwardly in loop form in the threading of theyarn through the tension washers, said supporting frame havingleading-in? and leading threading of the yarn through the tension washers a spider spann ng said r ng portion and a washer retaining p nuprising from the spider.

6 A yarn tension device comprising coacting tension'washers and asupporting frame therefor provided with a ring portion and an offsetclosed loop through which the yarn is drawn upwardlyin loop formin thethread ing ofthe yarn through the tension washers, a spider spanningsaid ring portion and a washer retainingipin uprising from the spider,the outer wall of the ring portion and the outer wall of the loop havlngpairs of coacting leading-in and leading-out recesses for guiding theyarn into and out of the tension device.

.7. A yarn'tension device comprising coacting tension washers and asupporting frame therefor provided with a ring portion and an offsetclosed loop through which the yarnis drawn upwardly in loop form inthethreading of the yarn throughthe tension washers, a spider spanningsaid ring portion and a washer retaining pin uprising from the spider,theouter wall of the ring portion and the outer wall of the loop havingpairs of coact-' ing leadingin and leading-out recesses 1 for guidingthe yarn into and out of the tension device, the outer wall of the ringportion also having uprising flanges forming guards for the tensionwashers. I

8. A yarn tension device comprising coacting upper and lower tensionwashers and a supporting frame therefor provided with a ring'po'rtion, aspider spanning the ring portion forming "a seat for the lower tensionwasher and a washer retaining pin uprising from the spider. V 9. Ayarn-tension device comprising coacting upper and lower tension washersand a supporting frame therefor provided with a ring portion, a spiderspanning'thering portion, the arms of the spider being stepped toformseats for the lower tension washer, and 3' washer retaining pinuprising from the spiw 2' IO. A yarn tension device comprising coacting'upper and lowertension washers and a supporting frame therefor.provided with a ring portion, a spider spanning the ring portion forminga seat for the lower tension washer, a washerretaining pin uprising fromthe spider and an offset closedloop through which the yarn is drawnupwardly in 100 form in thethreading of the yarnthrougli the tensionwashers. '11. ,A yarn tension device c oinprisingvcoacting upper andlower tension washers and a supporting frame therefor provided with aring portion, a spider spanning the ring portion, the arms of the spiderbeing step ed to form seats for the lower tension was er, a washerretaining pin uprising from the spider and an offset closed loop throughwhich 7 the yarn is drawn upwardly in loop form in the threading of theyarn through the tension washers.

12. A yarn tension device comprising co acting tension washers and asupporting frame therefor providedwith a ring portion and an offsetclosed loop through which the yarn is drawn upwardly in loopform in thethreading of the yarn through the tension 7 v washers, a spider spanningsaid ring portion and a washer retainingpin uprising. from the spider,the outer wall, of the ring portion and the outer wall of the loophaving pairs of co acting leading-in and leading-out recesses forguiding the yarn into and out of the tension device, the said outerwalls ofthe ring portion and loop having top recesses for facilitatingthe manipulation of the yarn in I threading the tension device.

In testimony that I claim the foregoing as my invention, I have signedmy name this 6th day ofApril, 1929;

JOHN O. MOKEAN.

